- 100
- 127
- 137
- 147
- b
-
1,3,7,15,31,63,_____
1+2=3
3+4=7
7+8=15
15+16=31
31+32=63
63+64=127
127+128=255
1,3,7,15,31,63,_____
1+2=3
3+4=7
7+8=15
15+16=31
31+32=63
63+64=127
127+128=255